[Paraview] CoProcessing question

[David E DeMarle]

Is this a job for TableExtentTranslator in the reader or adapter?

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109



On Wed, Jul 28, 2010 at 12:50 PM, Moreland, Kenneth <kmorel at sandia.gov> wrote:
> Actually, I think there is an issue with structured extents.  The problem
> with structured extents is that ParaView/VTK will ask for a particular
> extent on each process, and these extents are not likely to match up with
> what is actually available on that process.  It situation is stupid because
> the extents are picked arbitrarily, and everyone would be happy with the
> extents available from the FORTRAN code, but there is no way for the
> CoProcessing library to force the pipeline to accept certain extents.
>
> The only way around the problem right now that I know of is to place the
> data in a multiblock structure like AMR.
>
> -Ken
>
>
> On 7/28/10 9:59 AM, "Andy Bauer" <andy.bauer at kitware.com> wrote:
>
> Hi John,
>
> I'd like to think it works but as I haven't tested it to do that I'm not
> going to promise that it works :)  It uses a TrivialProducer to insert the
> data set/composite data set into the pipeline with the idea that
> coprocessing should essentially execute almost exactly the same as any
> corresponding paraview python script for pvbatch.
>
> Since you're asking about it though I'll try to look at it this week and get
> back to you.  If you get to it sooner than I do and find a bug then I'd also
> be more than happy to try and fix it.
>
> Andy
>
> On Wed, Jul 28, 2010 at 11:02 AM, Biddiscombe, John A. <biddisco at cscs.ch>
> wrote:
>
> I’m experimenting with the coProcessing library. It’s very nice. Well done
> you guys.
>
> Question : I have a Fortran code generating a slab of data (volume, actually
> a rectilinear grid, but for now I’ll be happy with a volume).
>
> I can send the data into the adaptor and generate datasets, all is well. On
> a single process all seems to be normal, but before I start on lots of cores
> .....
>
> The data is divided among processes such that I need to worry about whole
> extents, and piece extents.
>
> Can I export individual image data (rectilinear grid) pieces from each
> process, set the extent locally and let the usual paraview pipeline handle
> it. Normally (in a reader) I’d be getting piece numbers and all that and I’m
> not sure if this will be transparent or not.
>
> The Phasta (I think) example, uses a multiblcok structure, which I’d prefer
> to avoid. a Multipiece dataset is fine...is there a volume example anywhere?
>
> Thanks
>
> JB
>
>
>
>    ****      Kenneth Moreland
>     ***      Sandia National Laboratories
> ***********
> *** *** ***  email: kmorel at sandia.gov
> **  ***  **  phone: (505) 844-8919
>     ***      web:   http://www.cs.unm.edu/~kmorel
>
>
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